diff --git a/internal/querycoord/querynode_test.go b/internal/querycoord/querynode_test.go
index 7777176598653d6f27a30fcc7e10e060db289dec..50323fa03a22778346d41c8803c9fa627c6dd5fc 100644
--- a/internal/querycoord/querynode_test.go
+++ b/internal/querycoord/querynode_test.go
@@ -13,6 +13,7 @@ package querycoord
 
 import (
 	"context"
+	"fmt"
 	"testing"
 	"time"
 
@@ -22,12 +23,37 @@ import (
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/proto/commonpb"
 	"github.com/milvus-io/milvus/internal/proto/querypb"
+	"github.com/milvus-io/milvus/internal/util/typeutil"
 )
 
 //func waitQueryNodeOnline(cluster *queryNodeCluster, nodeID int64)
 
+func removeNodeSession(id int64) error {
+	kv, err := etcdkv.NewEtcdKV(Params.EtcdEndpoints, Params.MetaRootPath)
+	if err != nil {
+		return err
+	}
+	err = kv.Remove(fmt.Sprintf("session/"+typeutil.QueryNodeRole+"-%d", id))
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func removeAllSession() error {
+	kv, err := etcdkv.NewEtcdKV(Params.EtcdEndpoints, Params.MetaRootPath)
+	if err != nil {
+		return err
+	}
+	err = kv.RemoveWithPrefix("session")
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 func waitAllQueryNodeOffline(cluster Cluster, nodes map[int64]Node) bool {
-	reDoCount := 20
+	reDoCount := 40
 	for {
 		if reDoCount <= 0 {
 			return false
@@ -64,6 +90,8 @@ func TestQueryNode_MultiNode_stop(t *testing.T) {
 
 	time.Sleep(2 * time.Second)
 	queryNode1.stop()
+	err = removeNodeSession(queryNode1.queryNodeID)
+	assert.Nil(t, err)
 
 	queryCoord.LoadCollection(baseCtx, &querypb.LoadCollectionRequest{
 		Base: &commonpb.MsgBase{
@@ -84,10 +112,14 @@ func TestQueryNode_MultiNode_stop(t *testing.T) {
 	nodes, err := queryCoord.cluster.onlineNodes()
 	assert.Nil(t, err)
 	queryNode5.stop()
+	err = removeNodeSession(queryNode5.queryNodeID)
+	assert.Nil(t, err)
 
 	allNodeOffline := waitAllQueryNodeOffline(queryCoord.cluster, nodes)
 	assert.Equal(t, allNodeOffline, true)
 	queryCoord.Stop()
+	err = removeAllSession()
+	assert.Nil(t, err)
 }
 
 func TestQueryNode_MultiNode_reStart(t *testing.T) {
@@ -109,6 +141,8 @@ func TestQueryNode_MultiNode_reStart(t *testing.T) {
 		Schema:       genCollectionSchema(defaultCollectionID, false),
 	})
 	queryNode1.stop()
+	err = removeNodeSession(queryNode1.queryNodeID)
+	assert.Nil(t, err)
 	queryNode3, err := startQueryNodeServer(baseCtx)
 	assert.Nil(t, err)
 
@@ -123,10 +157,14 @@ func TestQueryNode_MultiNode_reStart(t *testing.T) {
 	nodes, err := queryCoord.cluster.onlineNodes()
 	assert.Nil(t, err)
 	queryNode3.stop()
+	err = removeNodeSession(queryNode3.queryNodeID)
+	assert.Nil(t, err)
 
 	allNodeOffline := waitAllQueryNodeOffline(queryCoord.cluster, nodes)
 	assert.Equal(t, allNodeOffline, true)
 	queryCoord.Stop()
+	err = removeAllSession()
+	assert.Nil(t, err)
 }
 
 func TestQueryNode_getMetrics(t *testing.T) {
@@ -153,6 +191,8 @@ func TestNewQueryNode(t *testing.T) {
 	cancel()
 	node.stop()
 	queryNode1.stop()
+	err = removeAllSession()
+	assert.Nil(t, err)
 }
 
 func TestReleaseCollectionOnOfflineNode(t *testing.T) {
diff --git a/internal/util/sessionutil/session_util.go b/internal/util/sessionutil/session_util.go
index c66c7558152eb3a0df2363bbf39b64a1d185b8f0..015392a6542561e74c2dd098edace880c6e51deb 100644
--- a/internal/util/sessionutil/session_util.go
+++ b/internal/util/sessionutil/session_util.go
@@ -20,7 +20,7 @@ const (
 	DefaultServiceRoot = "session/"
 	DefaultIDKey       = "id"
 	DefaultRetryTimes  = 30
-	DefaultTTL         = 10
+	DefaultTTL         = 60
 )
 
 type SessionEventType int